Tractor wheel



UNITED STATES FRED EVANS, orsUMMrr, NEW JERSEY, AssieNon or ONE-HALF yro HARTSHORNE a BATTELLE, OF NEVI YORK, N. Y., A FIRM COMPOSED OF EDWARD C. HAR'JISHOLflI'II,

SEAVEY BATTELLE, AND FREDERICK 11V. LUDTVIG. l

To all whom t may' eminem: j

Beit known that I, FRED EVANS, residing at Summit, county ofl Union', and State of N ew Jersey, have invented certain new and useful Improvements in a Tra'etor Wheel, of

lwhich the following is a specification.

f rlhis invention relates to new and useful improvements in tractorwheels, and one of the objects of the invention is to provide a wheel of the above character of simple construction, possessing a maximum of traction and which can be manufactured at a reasonable cost. l

A further object of the invention is to provide a wheel of the above character of such Construction that it will readily free itself of mud or dirt, which would tend to interfere with the efiicient operation of the wheel. j Y

Other objects and aims of the invention,

more or less specific thanthose referred to above, will be in part obvious and in part pointed out in the course of the following description of the elements, combinations, arrangements of parts and applications of principles, constituting the invention; and the scope of protection contemplated will be indicated in the appended claims.

In the accompanying drawing, wherein I have illustrated a preferred form of embodiment of my invention:

Figure 1 is an elevational view of my iinproved wheel.

Figure 2 is a sectional viewthereof, taken on line 2 2 of Figure 1; and

Figure 3 is an elevational view of a portion of the face or rim of the wheel.

Referring now to the drawing, wherein similar reference characters refer to similar parts throughout the views thereof, the reference numeral 1 denotes the wheel proper which as will be noted comprises a cylindrically formed boX-like structure composed of the two parts 2 and 3 suitably fastened together at their hub portion 11, although it will be understood that auxiliary fastening devices may be employedif desired.

Flanges 5 and 6 formedupon the side pieces 2 and 3 form the rim portion of the wheel. These rim portions 5' and 6 have mounted thereon at spaced intervals pairs of substantially cone-shaped prongs or projections 7 which are adapted to engage with the ground. Extending through the wheel Specification of Letters Patent.

' TRACTOR vWHEEL.

Patented Feb. 7, 1922.

.Application filed March 27, 1920. Serial 11o. 369,166.

adjacent the rim thereof are shafts 8, said shafts being equi-distantly disposed about the wheel, as clearly kshown in Figure 1,

each shaft at its outer end having j ournalled thereon a roller 9.

Mounted upon the periphery of the wheel a plurality of feet 10, eachl foot-piece having a face portion 11, the rear surface ofi which is in rocking engagement with the rim of the fwheel, and also having llaterally flanged portions 12 and 13 which lie adjacent lateral faces of the wheel.

It will be noted that the edges :of the flanges 12 and 13 of each foot-piece convergeV in a rearward direction,` as shown at 141 and 15.' In other words, that they are of wedgeshaped form, the wedge-shaped edges 14 and 15 being engaged respectively with adjacent rollers 9. The construction of the part just described is such that during the rocking movement of the foot-pieces upon the rim of theiwheel, due to thefengagement ofthe faces thereof with the ground, the engage PATENT OFFICE.

pieces. It will be noted that in the present construction each spring is a continuous member extending entirely about the wheel and that said spring operates to hold all of the foot-pieces, save those in engagement with the ground, in the position shown in Figure 1 of the drawings, that is to say, with the face ofeach foot at right angles to the aXis of the wheel.

-Provided at theV opposite ends of each foot-piece are projections or spurs 19 and 20, whichl are of course adapted to engage with the ground as is usual in tractor wheels of this character. The faceV 11 of each footpiece is provided with a transversely ,dis-

posed slot 21, each of which receive a palr as the projectionsro'r spurs 19 and 20. Aside from their function of engaging the ground, the spurs 7 have the further function, in conjunction with the rollers 9, of preventing a circumferential displacement of the various foot-pieces.V This function is accomplished by the engagement of the spurs 7 with the Vlateral walls of the Slots 21.

Having thus described this form of em'- bodi'ment of my invention, the operation thereof should be obvious without further explanation. A p' It willbe observed Vthat during the opi eration of the wheel the engagement of the foot-pieces with the ground will causethem to assume the position shown in Figure l of the drawings, at least two ofthe footpieces beingln engagement with the ground at all times. 'The rocking movement of the foot-pieces upon the rim of the wheel tends to free thewheel of mud, dirt, or other foreign substa-nces, which result is further aided vby the'engagement of the wedge-shaped edges of the foot-pieces with the rollers 9; Y It will accordingly be seen thatI have provided a construction well adapted to attain, among others, all the aims and objects above pointed out, in a simple and e'liicient manner, in that I have provided a Wheel specially Well adapted vfor the purposes in-V tended.' Y,

As many changescould be made in this construction without departing from the scope of the following claims,jit is intended that all matter contained in the above description or shown in the accompanying drawing shall be interpreted asillustrative only and not ina limiting sense.

Having thus describedmy invention what I claim as new and desire to secure by Letters Patent is:

l. A tractor wheel having arrimfand a p' pluralityV of feet, havingv portions resting upon the edge of the rimand portions em# Y bracing'the latter, projections upon said feet,

projections upon said rim, which extend through said feet, endless spring members which engage the parts embracing said rim to hold said feet in lposition upon the latter,

' and a plurality of rollers mounted upon saidy rim adapted to engage with said feet and hold them-in spaced relation upon `said rim. 2. A tractor wheel comprising a pair of cylindrically formed members suitably fas- L c tened together,said tractor wheel having a plurality of feet mounted in spaced relation upon its periphery, each of said feet comprising a box-like structure, one part of which lies inV rocking engagement with the rim, and the other parts of which embrace feet, which hold the latter' in movable relation to the rim'of the wheel.

In testimony whereof I aHiX my signature in the presence of two witnesses.

lVitnesses':

EMMA IVEINBERG, IRVING A. HoMER;

FRED Evans. V- 

